List exisiting terms from the core context.

Alternatively, a batch upsert with ["replace"]{.HTML-Code} update mode can be

used, as described in Clause+++clause-10+++10.3.3.

The following names should be avoided when defining Entity Types, as definitions

already exist within the Core _`@context`_, and are used for the operations of

NGSI-LD API itself:

- ["Attribute"]{.HTML-Code}, ["AttributeList"]{.HTML-Code} ,

  ["ContextSourceIdentity"]{.HTML-Code} ,

  ["ContextSourceNotification"]{.HTML-Code},

  ["ContextSourceRegistration"]{.HTML-Code}, ["EntityTypeInfo"]{.HTML-Code} ,

  ["EntityTypeList"]{.HTML-Code}, ["ExecutionResultDetails"]{.HTML-Code},

  ["GeoProperty"]{.HTML-Code} , ["JsonProperty"]{.HTML-Code},

  ["LanguageProperty"]{.HTML-Code}, ["ListProperty"]{.HTML-Code} ,

  ["ListRelationship"]{.HTML-Code}, ["Notification"]{.HTML-Code},

  ["Property"]{.HTML-Code} , ["Relationship"]{.HTML-Code},

  ["Snapshot"]{.HTML-Code}, ["SnapshotNotification"]{.HTML-Code} ,

  ["Subscription"]{.HTML-Code}, ["TemporalProperty"]{.HTML-Code},

  ["VocabProperty"]{.HTML-Code}

The following names are defined in in the Core _`@context`_ using their standard

GeoJSON-LD definitions [i.13], and reserved for use in geographic operations:

- ["Feature"]{.HTML-Code}, ["FeatureCollection"]{.HTML-Code},

  ["GeometryCollection"]{.HTML-Code} , ["LineString"]{.HTML-Code},

  ["MultiLineString"]{.HTML-Code}, ["MultiPoint"]{.HTML-Code} ,

  ["MultiPolygon"]{.HTML-Code}, ["Point"]{.HTML-Code}, ["Polygon"]{.HTML-Code}

The following names are defined in in the Core _`@context`_ and are reserved for

temporal definitions:

- ["Date"]{.HTML-Code}, ["DateTime"]{.HTML-Code}, ["Time"]{.HTML-Code}

### 5.2.4 Simple Attributes / temporal Attributes

NGSI-LD defines the following Properties of type _TemporalProperty_ that shall

|                                    |                                                                       |  _`management`_ and                           |

|                                    |                                                                       | _`endpoint`_                                  |

+------------------------------------+-----------------------------------------------------------------------+-----------------------------------------------+

| _`coordinates`_                    | GeoParams, OrderingParams                                             |                                               |

| _`coordinates`_                    | GeoParams, OrderingParams, GeoProperty                                |                                               |

+------------------------------------+-----------------------------------------------------------------------+-----------------------------------------------+

| _`createdAt`_                      | Property, Relationship, GeoProperty, ListProperty, ListRelationship,  |                                               |

|                                    | LanguageProperty, JsonProperty, VocabProperty, Entity, Snapshot       |                                               |

- ["avg"]{.HTML-Code}, ["distinctCount"]{.HTML-Code}, ["max"]{.HTML-Code},

  ["min"]{.HTML-Code}, ["stddev"]{.HTML-Code}, ["sum"]{.HTML-Code},

  ["sumsq"]{.HTML-Code}, ["totalCount"]{.HTML-Code} are Property-scoped and

  used by the Aggregated temporal representation of an Entity. See Clause

  5.3.2.7

  ["sumsq"]{.HTML-Code}, ["totalCount"]{.HTML-Code} are Property-scoped and used

  by the Aggregated temporal representation of an Entity. See Clause 5.3.2.7

- ["bbox"]{.HTML-Code}, ["properties"]{.HTML-Code}, ["coordinates"]{.HTML-Code}

  are used in geographic operations and retain their standard GeoJSON-LD